Jim is suffering from congestive heart failure, in which blood flow is backed up in his lungs and excess fluid is escaping the blood and accumulating in his lung tissue. If untreated, increasing pulmonary edema will lead to death by suffocation. What is the most-likely cause of Jim’s congestive heart failure?
A. Contraction of his right atrium is not keeping up with contraction of his left atrium.
B. Contraction of his left ventricle is not keeping up with contraction of his right ventricle.
C. Jim’s pulmonary semilunar valve is not opening properly.
D. Jim’s SA node is malfunctioning.
E. Jim’s right atrioventricular valve (tricuspid valve) is not closing properly.
Gather Content
What do you already know about the path of blood between the heart and the lungs? What other information is related to the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
B. Contraction of his left ventricle is not keeping up with contraction of his right ventricle.
Gather Content
What do you already know about the path of blood between the heart and the lungs? What other information is related to the question?
· Deoxygenated blood returns to the right atrium of the heart.
· The right atrium forces blood into the right ventricle.
· The right ventricle pumps deoxygenated blood to the lungs, where it can receive oxygen.
· Oxygenated blood returns to the left atrium of the heart.
· The left atrium pumps blood into the left ventricle.
· The left ventricle pumps oxygenated blood to the tissues of the body.
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
· The right side of Jim’s heart, including the tricuspid valve, the right ventricle, and the pulmonary semilunar valve are working normally since there is an excess of blood in the lungs.
· Since an irregular heartbeat was not noted here, there is not reason to suspect the SA node is not functioning as it should.
· Jim’s blood flow is backing up in his lungs, which means the heart is not pushing blood to the body fast enough. Since the left ventricle is responsible for this, it may not be functioning as it should in Jim’s case.
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
· Apply level:
o Answering this question correctly depended on your ability to use the path of blood between the heart and lungs in a new situation. If you got an incorrect answer, did you remember that the right side of the heart is responsible for sending blood to the lungs, or that the left side of the heart sends blood to the body once it has returned from the lungs? Did you have trouble extending the normal path of blood to determine the correct answer?
You might also like to view...
The neuron that releases neurotransmitters is known as ________, while the neuron that receives the neurotransmitters is knows as ________
Fill in the blank(s) with correct word
If a drug interferes with the activities of transfer RNA, which one of the following is likely to occur?
A. DNA will not be able to make copies of itself. B. Proteins will not be produced. C. Mutations will occur to the DNA. D. Messenger RNA will not be manufactured.
Which of the following have features that show morphological convergence?
A. Sharks, penguins, and porpoises B. Panthers and tigers C. Apes and monkeys D. Sharks, skates, and rays E. Mice, rats, and gerbils
In helminth life cycles, the organism that harbors the adult sexually reproductive phase of the parasite is called the intermediate host
Indicate whether the statement is true or false